const a = Socket {
    _events: [Object: null prototype] {},
    _eventsCount: 0,
    _maxListeners: undefined,
    nsp: Namespace {
        _events: [Object: null prototype],
        _eventsCount: 1,
        _maxListeners: undefined,
        sockets: [Map],
        _fns: [],
        _ids: 0,
        server: [Server],
        name: '/',
        adapter: [Adapter],
        [Symbol(kCapture)]: false
    },
    client: Client {
        sockets: [Map],
        nsps: [Map],
        server: [Server],
        conn: [Socket],
        encoder: Encoder {},
        decoder: [Decoder],
        id: 'QBS6J3-Th2ZB38HuAAAA',
        onclose: [Function: bound onclose],
        ondata: [Function: bound ondata],
        onerror: [Function: bound onerror],
        ondecoded: [Function: bound ondecoded],
        connectTimeout: undefined
    },
    data: {},
    acks: Map(0) {},
    fns: [],
    flags: {},
    server: Server {
        _events: [Object: null prototype] {},
        _eventsCount: 0,
        _maxListeners: undefined,
        _nsps: [Map],
        parentNsps: Map(0) {},
        _path: '/socket.io',
        clientPathRegex: /^\/socket\.io\/socket\.io(\.min|\.msgpack\.min)?\.js(\.map)?$/,
        _connectTimeout: 45000,
        _serveClient: true,
        _parser: [Object],
        encoder: Encoder {},
        _adapter: [class Adapter extends EventEmitter],
        sockets: [Namespace],
        opts: {},
        eio: [Server],
        httpServer: [Server],
        engine: [Server],
        [Symbol(kCapture)]: false
    },
    adapter: Adapter {
        _events: [Object: null prototype] {},
        _eventsCount: 0,
        _maxListeners: undefined,
        nsp: [Namespace],
        rooms: [Map],
        sids: [Map],
        encoder: Encoder {},
        [Symbol(kCapture)]: false
    },
    id: 'hKDz277tAt7QOVBSAAAB',
    connected: true,
    disconnected: false,
    handshake: {
        headers: [Object],
        time: 'Tue Aug 10 2021 22:00:49 GMT+0800 (中国标准时间)',
        address: '::ffff:127.0.0.1',
        xdomain: false,
        secure: false,
        issued: 1628604049807,
        url: '/socket.io/?EIO=4&transport=polling&t=NimNQEI',
        query: [Object: null prototype],
        auth: {}
    },
    [Symbol(kCapture)]: false
}